A researcher wants to test whether the average height of men and women in a certain population is the same. She takes a sample of 50 men and a sample of 50 women and finds that the sample means are 175 cm and 165 cm, respectively. What is the p-value for this hypothesis test at a significance level of 0.01? a. 0.005
b. 0.010
c. 0.025
d. 0.050